org.activiti.engine.ActivitiException: Unknown method used in expression: ${!preQualResponseProcessor.hasErrors()}

activiti.org | 7 months ago
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    after bpmn deployment, activiti still uses previous deployment file | Activiti Forums

    activiti.org | 7 months ago
    org.activiti.engine.ActivitiException: Unknown method used in expression: ${!preQualResponseProcessor.hasErrors()}
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    Referring to task local variable in expression (activiti 5.16.3)

    Stack Overflow | 2 years ago | user3443096
    org.activiti.engine.ActivitiException: Unknown property used in expression: ${userTask1.varA == "uTask2"}

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    Root Cause Analysis

    1. org.activiti.engine.ActivitiException

      Unknown method used in expression: ${!preQualResponseProcessor.hasErrors()}

      at org.activiti.engine.impl.el.JuelExpression.getValue()
    2. Activiti - Engine
      JuelExpression.getValue
      1. org.activiti.engine.impl.el.JuelExpression.getValue(JuelExpression.java:55)[activiti-engine-5.14.jar:5.14]
      1 frame